Experiments

grbl homing with NC switches can start out as something small but can become very tricky very fast. There are plenty of options within the firmware but getting a combination of settings right is critical. However with the correct wiring and right sequence of options in grbl can lead to flawless homing within minutes.

This is a mini UPS based on TI’s BQ24650 Li-Ion battery charger and Liner’s LTC4353 load switch. The BQ24650 is essentially a multi-chemistry battery charger specifically meant for solar panels. It can charge upto 4 Li-Ion batteries. Other chemistries are…

This is a mini UPS battery backup based on Linear Technology’s LT3652HV. The HV is a high voltage version that can charge upto 4 cell Li-Ion batteries. Other chemistries are also supported. This one supports charging using a solar panel…

I’ve always admired touchpad technology and I recently got a chance to make my own 12-key touchpad using Freescale’s MPR121Q. This nifty little chip supports upto 12 debounced pads, configurable registers and works on the I2C protocol. All the electrodes…